

That’s the key point, isn’t it? OP’s question isn’t really as hypothetical as it’s phrased; you definitely can go on Amazon or eBay and find cheaper, Chinese knockoff parts.
But will they perform to the same standards as top name brands? Very unlikely.

Obligatory reference because you’re on startrek.website:
Why would you want one small, multi-purpose device when you can have a PADD for each book/instruction manual/hourly report? 🙂